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4 Mon 'Kan'eitsūhō' Ansei Copper Alloy, 11 waves
| Issuer | Tokugawa Shogunate |
|---|---|
| Year | 1857-1859 |
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| Composition | Log in to see details |
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| Technique | Cast |
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| Obverse description | Central square hole flanked by four Chinese characters arranged in a cruciform pattern around the perforation, reading clockwise from top: 寛 (top), 通 (right), 永 (bottom), 寶 (left), forming the legend 寛永通寶 (Kan'ei Tsūhō, meaning 'Currency of Kan'ei'). The characters are cast in relief within a plain, unadorned field bounded by a raised rim. The overall composition is typical of East Asian cast cash coinage, with bold, clear strokes in the standard kai (regular script) style. |
|---|---|
| Obverse script | Chinese |
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| Reverse description | Eleven stylized wave patterns radiating symmetrically around the central square hole, arranged in two arching registers — five waves above and six below — divided by the square perforation. The waves are cast in bold relief with clearly delineated curved lines, filling the entire field between the square hole and the outer rim. This distinctive wave design serves as the primary distinguishing feature of the Ansei-era 4 Mon issue, differentiating it from earlier Kan'ei Tsūhō types. |
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